@article{m.g. ugur2012high,
  title={Do high levels of CA 19-9 in women with mature cystic teratomas of the ovary warrant further evaluation?},
  author={m.g. ugur,e. ozturk,o. balat,e. dikensoy,s. teke,a. aydin},
  journal={European Journal of Gynaecological Oncology},
  volume={33},
  number={2},
  pages={207--210},
  doi = {10.12892/ejgo201202207},
  year={2012}
}